Who did Gao Jian end up with?

Finally with Xiaofeng. At the end of Super Thriller, Gao Jian and Xiaofeng were together. At the end of the story, Gao Jian returned to Jiangcheng, where he found Xiaofeng opening a noodle restaurant next to his shop, remembering that he still owed Xiaofeng a promise.

Gao Jian and Xiaofeng are together because of their deep feelings and their efforts to protect each other and their future.